Rename WM test filter to FrameworksTestsFilter

This CL adds Window Manager related tests of FrameworksServicesTests
to the test filter, and adds a comment to each tests mentioning about
FrameworksTestsFilter.

Test: Pass all 85 non-flaky presubmit tests of FrameworksCoreTests specified
      in FrameworksTestsFilter.
  $ tradefed.sh run commandAndExit FrameworksCoreTests \
      --instrumentation-arg filter=com.android.server.wm.test.filters.FrameworksTestsFilter
      --include-annotation android.platform.test.annotations.Presubmit \
      --exclude-annotation androidx.test.filters.FlakyTest

Test: Pass all 133 non-flaky presubmit tests of FrameworksServicesTests
      specified in FrameworksTestsFilter.
  $ tradefed.sh run commandAndExit FrameworksServicesTests \
      --instrumentation-arg filter=com.android.server.wm.test.filters.FrameworksTestsFilter
      --include-annotation android.platform.test.annotations.Presubmit \
      --exclude-annotation androidx.test.filters.FlakyTest

Test: Pass all 162 non-flaky presubmit tests of FrameworksServicesTests
      specified as under package com.android.server.wm.
  $ tradefed.sh run commandAndExit FrameworksServicesTests \
      --instrumentation-arg selectTest=com.android.server.wm. \
      --instrumentation-arg filter=com.android.server.wm.test.filters.FrameworksTestsFilter
      --include-annotation android.platform.test.annotations.Presubmit \
      --exclude-annotation androidx.test.filters.FlakyTest
Bug: 122451194

Change-Id: I9592ff01158eec1b4ef4d0dd22be243e10bd198e
Merged-In: I9592ff01158eec1b4ef4d0dd22be243e10bd198e